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Cichlids have developed into the most loved ornamental aquarium fish for aquarists as a result of their bright colors, vigorous and animated nature, and being aggressive and territorial. Many hobbyists may have the question in mind: "Is it possible to keep cichlids together with other fish?" It is possible, however, under certain circumstances only. If two fish are put together at random, it is easy to trigger fights or to be bullied by the bigger fish. In serious cases, the smaller fish will eventually be killed.

Based on practical experience, this article will thoroughly analyze whether it is possible to keep cichlids together with other fish, what the compatible fish are, and the precautions required, and establish a balanced environment for the aquarium fish tank.

Cichlid Temperament and the Challenges of Mixed Tank Keeping

Cichlids fall into the family Cichlidae, and almost all species are very territorial and aggression-prone, particularly the African cichlids (e.g., Red Dragon, Sapphire, and Peacock) and the South American cichlids (e.g., Angel, Map, and Volcano), which become very aggressive when breeding.

The most important aspect of choosing appropriate tank mates for cichlids is that tank mates that are similar in size and pace to your cichlids, as well as being a courageous species, will be suitable. Any small and skittish fish, like Red-green tetras and neon tetras, should not be housed with large cichlids.

Which Fish Can Be Kept with Cichlids? Recommended Tankmate Combinations

Suitable Tankmate Combinations for Large African Cichlids

• Synodontis (Catfish) - they are both nocturnal, and stick to different areas of activity; this reduces their chance of conflict.
• Big bettas (like Thai bettas, kissing gouramis) - they are big enough and nasty enough to look after themselves with other species of fish.
• Big catfish (like algae eaters, loaches) - these sort the tank out!
• Other African cichlids - e.g., Colored peacock cichlids- these must be watched, as there will be conflict between different species.

Recommended Mixed Tanks for South American Cichlids

• Angelfish can be kept in a community tank with schools of neon tetras, loaches, and some small South American cichlids.
• Mapfish may be housed with large arowanas and Siamese fighting fish, as long as the tank is large enough.

Beginner's Tip: A single-species cichlid tank is the best and most satisfying way to begin. You can add other fish with cichlids once the tank has settled in.

Common Causes of Mixed Tank Failure and How to Avoid Them

1. Tank Size: All about cichlids is that they are big, active fish, and they are in need of lots of space to swim around in and lots of places to hide. Mixed species aquarium fish tanks are better at 200 litres, though 300 is even better.
2. Water Parameters: Cichlids are quite sensitive to poor water parameters. This sensitivity is multiplied by the added amount of bio-load present in a mixed tank. This can often lead to ammonia levels rising to toxic levels.
3. Lack of Territories: To achieve balance when mixing it is useful to provide numerous separate regions in your aquarium using various decor. Large rocks, caves ( ceramic or otherwise), and various pieces of driftwood.
4. Incorrect Ratio: Having too many "dominating" fish can cause weaker species to constantly be harassed by them.

How to Increase Success Rates in Mixed Tanks with LED Aquarium Plant Lights

Healthy plants can significantly reduce conflicts in mixed tanks! Dense vegetation not only provides hiding spots but also improves water quality and suppresses algae.

Recommended LED lights for aquarium plants:

• Full spectrum plant light (6500K color temp recommended)
• The timed on/off function allows users to create simulated sunrises and sunsets.
• Adjustable intensity based on plant type requirements (Low-light plants such as moss and pepperwort; high-light plants such as, for instance, aquatic plants such as, for example, tiger ear and crown.)

After adding aquatic plants into the cichlid aquarium, the cichlids will spend more time exploring their environment, becoming less aggressive, and the system is more balanced.

Practical mixed tank set-up checklist:

• 200L or larger (the bigger, the better)
• Powerful filter system (combination of top-mounted and under-mounted filters recommended)
• Water to be maintained at between 24-28 °C, with pH adjusted appropriately to suit the species (alkaline for African, slightly acidic for South American cichlids)
• 30%-50% water change should be performed every week
• Fish are fed small amounts multiple times per day to limit feeding aggression
• At least 1-2 hiding places should be provided per fish

Mixed cichlid tanks require experience and patience

In conclusion, a cichlid mixed tank is not for the beginner. It demands patience and experience. Cichlids can be kept with other fish, but not by chance! Space, suitable tank mates, stable water, and an interesting aquariumscape are vital. Beginner set-ups are advised to be as simple as possible until one gains experience.